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|Title:||ELECTROCHEMICAL REDUCTION OF CARBON DIOXIDE USING COPPER BASED METAL ELECTRODES||Authors:||REN DAN||ORCID iD:||orcid.org/0000-0003-3738-6421||Keywords:||Carbon Dioxide, Copper, Electrocatalysis, Ethylene, Ethanol, n-Propanol||Issue Date:||4-Aug-2017||Citation:||REN DAN (2017-08-04). ELECTROCHEMICAL REDUCTION OF CARBON DIOXIDE USING COPPER BASED METAL ELECTRODES. ScholarBank@NUS Repository.||Abstract:||The electrochemical reduction of carbon dioxide using solar electricity has the potential of sustainably producing chemical feedstocks and fuels for our energy needs. Among all the transition metals, only Cu electrodes catalyze the formation of hydrocarbons and alcohols, albeit with poor selectivity. In this study, we investigated different Cu nanostructures as electrocatalysts to improve the selectivity towards the formation of C2 and C3 products. Oxide-derived Cu nanoparticles were found to be selective and efficient for the formation of ethylene and n-propanol. When doped with Zn to form Cu-Zn bimetallic electrocatalysts, the selectivity of ethanol was significantly improved compared with Cu monometallic particles. The mechanism for the formation of these products was also proposed. Beyond the previous work that only focused on catalyst development for the formation of hydrocarbons and alcohols, we have also coupled our electrochemical cell with photovoltaics to achieve solar conversion of carbon dioxide to ethylene.||URI:||http://scholarbank.nus.edu.sg/handle/10635/138167|
|Appears in Collections:||Ph.D Theses (Open)|
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